-119- 
rotenone, and 29 for borax, and the hours to kill averaged 87, 34, 
112, 37, and 127, respectively.— Laudini and Sweetman (359) • 
Gryllidae 
Aoheta domestics (L.) ( g Gryllas domestlcus L.), the house cricket 
Tfhen this pest invades houses it can be controlled by dusts of 
sodium fluoride, powdered borax, pyrethrum, or rotenone.— McDaniel 
(378). 
Gryllotalpa sp., a mole cricket 
In New South Wales a spray consisting of 1 ounoe of derris powder, 
3 ounces of soft soap, and 3 gallons of water, and a proprietary derris 
insecticide were both very effective.— New South Wales Department of 
Agriculture (444 ) . 
Locustidae 
Locusta migratoria manilensis Meyen, a subspecies of the common migra- 
tory locust 
In laboratory and field tests fine derris dust (2 to 4 percent of 
rotenone) was deadly to the nymphs and adults. In the Philippine Islands 
derris powder may be employed instead of arsenicals, the extensive use 
of which is objected to because of the risk to stock and operators.— 
Otanes (452 ) ; Otanes and Karganilla (453 ) • 
In cage tests conducted in China with insecticides prepared from 
Celastrus angulatus and Millettla reticulata , the former was the more 
effective to tiae nymphs .--China Agricultural Researoh Bureau (112 ) . 
Locus tana pardalina (Wlk.), the brown locust 
A derris bait we.» ineffective in South Africa, and a suspension of 
1 percent derris root (9 percent of rotenone) acted slowly, killing only 
69.7 percent of them after 96 hours.— Nolte (446 ) . 
HYMENOPTERA 
Apidae 
Apis mellifera L., the honeybee 
A proprietary derris preparation, mixed with sucrose, was fed to 
bees in oages in England. It poisoned the bees only slightly for it 
